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US 4,060,118 AGranted
Recovering chloride flux salts for aluminum
AssigneeAlumax Mill Products, Inc.
InventorsPandelis N. Papafingos, Richard T. Lance
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Abstract
A method and apparatus for recovering flux salt and recycling or reusing the same in an aluminum refining method by introducing salt brine into a cylindrical evaporator with hot evaporator gas, rotating the evaporator to expose the brine to the hot gas and removing the slurry from the evaporator.
Claims3
A process for recovering soluble chloride flux salts for aluminum from an aluminum dross brine comprising the steps of:
- introducing the brine to an input end of a cylindrical evaporator;
- introducing hot evaporator gas into the evaporator;
- rotating the cylindrical evaporator to repeatedly immerse evaporating surfaces of said evaporator to form thereon a film of brine and to expose said film to said evaporator gas to thereby form salt crystals on said surfaces and immersing said salt crystal covered surfaces into a body of brine to thereby form a slurry of salt crystals in saturated brine;
- removing slurry from an output of the evaporator;
- and
- separating the slurry into salt crystal product and saturated brine.
3 more elements
Dependencies are inferred from the claim text.